MBW 973-SF6, Руководство по эксплуатации

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MBW973-SF6_MANUAL_E_V3.1
21
Measurement with SO
2
Option
The section describes the measurement procedure for the 973 equipped with the SO
2
option.
Refer to page 19 for equivalent procedures for instruments without the SO
2
option.
If you intend to collect the measurement data automatically, please install the Excel Protocol
sheet, as described on page 25, before the start of the measurement.
As soon as the 973 is connected to the gas compartment,
the current vessel pressure is indicated. The standard con-
figuration for the pressure unit is kPa absolute. The input
pressure range is 120…1’000 kPa abs.
When the instrument is switched on, the standard measur-
ing mode with
SO
2
Measurement , Humidity Measure-
ment , % Volume SF
6
Measurement and Pump Back Af-
ter Measurement is activated.
Press the Start button. The Start button and the Pump but-
ton turn green. The pump starts and the SO2 clock, located
next to the Start button, begins to spin. During the
measurement, SF
6
gas flows from the gas compartment,
through the hose, through the SO
2
module, and into the
internal storage cylinder.
Once the SO
2
measurement is complete, the spinning clock
stops and the measured SO
2
concentration is displayed.
The 973 then automatically initiates humidity measurement.
The spinning clock indicates that measurement is in pro-
gress. During humidity measurement, SF
6
gas flows from
the gas compartment through the measurement head, and
into the internal cylinder.
After completion of the humidity measurement, the spinning
clock stops and the humidity content in ppm
v
is displayed.
Then the % volume SF
6
measurement starts and the
corresponding clock begins to spin.
The internal cylinder trend arrows and level indicator show
the rising pressure in the internal storage cylinder.